From e518a9f031784fd4b097e460137999f86a11936e Mon Sep 17 00:00:00 2001
From: "chao.an" <anchao@xiaomi.com>
Date: Wed, 26 Jan 2022 20:22:39 +0800
Subject: [PATCH] tools/Config.mk: suppress all normal output for cmp

Fix build break:
make: *** No rule to make target 'byte', needed by 'differ'.  Stop.

Regression by:
-----------------------------------------------------
|commit 0951f70df6473cbde0fa338586da51edc604fe8f
|
|    Improve dependencies for include/nuttx/version.h
-----------------------------------------------------

Signed-off-by: chao.an <anchao@xiaomi.com>
---
 tools/Config.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/Config.mk b/tools/Config.mk
index a5091e6737..56f512f9ad 100644
--- a/tools/Config.mk
+++ b/tools/Config.mk
@@ -508,7 +508,7 @@ endef
 else
 define TESTANDREPLACEFILE
 	if [ -f $2 ]; then \
-		if cmp $1 $2; then \
+		if cmp -s $1 $2; then \
 			rm -f $1; \
 		else \
 			mv $1 $2; \